Utica Main
Key Takeaway
Utica Main is classified as high hazard in California. It was completed in 1903 and is 123 years old. Its primary use is hydroelectric. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 59 ft (taller than 66.7% in CA) |
| Dam Length | 374 ft |
| Dam Type | Rockfill |
| Max Storage | 2.5K acre-ft |
| Normal Storage | 2.4K acre-ft |
| Surface Area | 234 acres |
| Drainage Area | 15 sq mi |
| Max Discharge | 12,700 cfs |
| Year Completed | 1903 (123 years old) |
| NID ID | CA00427 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Northern California Power Agency
Private
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Low Hazard 26 ftFrequently Asked Questions
What is the hazard classification of Utica Main?
Utica Main is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Utica Main?
Utica Main is owned by Northern California Power Agency (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Utica Main built?
Utica Main was completed in 1903, making it 123 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Utica Main?
Utica Main serves the following purposes: Hydroelectric, Recreation, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Utica Main?
Utica Main has a dam height of 59 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Utica Main last inspected?
Utica Main was last inspected on August 10, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.